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Augmented reality assisted spine internal fixation screw implantation method and system

A technology of augmented reality and screw fixation, applied to internal fixers, fixators, surgical navigation systems, etc., can solve problems such as negative impact on cognition and mobility, high cost, and interruption of navigation, so as to reduce the risk of navigation drift, The effect of improving the accuracy of nail implantation

Pending Publication Date: 2021-10-08
贺世明
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the most prominent problems is the interruption of line of sight. In real-time computer navigation, the recognition of navigation markers by remote tracking cameras may be blocked by visual obstacles, resulting in interruption of navigation.
For artificial nail implantation assisted by neuronavigation, it is necessary to repeatedly switch the line of sight between the surgical field and the remote screen during the operation. This shift of attention will have a negative impact on cognition and mobility.
In addition, when there is excess soft tissue or inclined articular surfaces, robotic-assisted neuronavigated spine surgery also has the risk of slippage due to shifting of the entry point and trajectory of the implant.
Also, the navigation is expensive and the cost is higher

Method used

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  • Augmented reality assisted spine internal fixation screw implantation method and system
  • Augmented reality assisted spine internal fixation screw implantation method and system
  • Augmented reality assisted spine internal fixation screw implantation method and system

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Experimental program
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Embodiment

[0063] After long-term research and practice, the inventors of the present application found that there are defects in the three traditional methods for pedicle screw internal fixation. The overall average accuracy rates of robot-assisted computer-guided nail implantation were 89.3%, 96.6%, and 92.3%, respectively, and the accuracy of freehand nail implantation fluctuated from 52% to 74.9%. Poorly positioned pedicle screws may lead to a series of complications, including nerve and blood vessel damage, cerebrospinal fluid leakage, and even visceral damage. Advances in imaging-based computer navigation and more recently robotics are aimed at minimizing pedicle screw misalignment, reducing radiation exposure, and enhancing screw placement efficiency. Although neuronavigation and robot-assisted neuronavigation methods have significantly improved the accuracy of freehand nail placement, both methods have technical shortcomings. One of the most prominent problems is the interruptio...

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Abstract

The invention discloses an augmented reality assisted spine internal fixation screw implantation method and system, and relates to the technical field of spine pedicle screw implantation, the method comprises the following steps: creating a virtual spine three-dimensional model according to patient lesion image data; making an operation plan according to the virtual spine three-dimensional model, and obtaining a virtual spine three-dimensional model with the operation plan; importing the virtual spine three-dimensional model with the operation plan into VR equipment to obtain a retina projection 3D model with the operation plan; a doctor wearing AR equipment, performing matching calibration on the retina projection 3D model with the operation plan and the real spine model, performing locking after calibration is completed, obtaining the calibrated projection 3D model with the operation plan, and completing an operation on the real spine model according to the operation plan shown by the projection 3D model; and evalulating the accuracy of nail planting. The nail implanting accuracy is remarkably improved, and the risk of navigation drifting in an operation is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of spinal pedicle screw implantation, in particular to a method and system for implanting spinal internal fixation screws assisted by augmented reality. Background technique [0002] Pedicle screw internal fixation has become the main method for the treatment of mechanical instability caused by degenerative, traumatic, neoplastic and deformity diseases of the spine. Traditionally, manual manipulation is used to guide appropriate pedicle screw entry points and trajectories by identifying anatomical landmarks. It is generally believed that through the accumulation of experience and repeated training, freehand pedicle screw placement is still technically difficult and risky. In literature reports, the accuracy rate of freehand nail implantation fluctuates from 52% to 74.9%. Poorly positioned pedicle screws can lead to a range of complications, including neurological and vascular damage, CSF leaks, and even vi...

Claims

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Application Information

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IPC IPC(8): A61B34/10A61B34/20A61B17/92A61B17/70
CPCA61B34/10A61B34/20A61B17/92A61B17/7074A61B2034/105A61B2034/101A61B2034/2065
Inventor 贺世明
Owner 贺世明
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